Granted Patent
Utility
US 4,149,799 · App. 05/848,737
Photographic printer with automatic slope compensation
Inventors:
John Pone, Jr., Peter Seidel
Patented Case
View Patent ↗
Granted: Apr 17, 1979
Filed: Nov 4, 1977
Inventors
John Pone, Jr.
Peter Seidel
Assignee (at issue)
Pako Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.